Digital Networks North America DNswitch 800 - Manual (Page 35)

DNswitch 800 Configuring and Monitoring the Switch 25
STA Port Configuration
The following figure and table describe STA configuration for ports.
Figure 3-17. STA Port Configuration
Parameter Default Description
Fast forwarding mode ENABLED Allows you to enable or disable fast forwarding for
all ports on the switch.
Priority 128 Defines the priority for the use of a port in the STA
algorithm. If the path cost for all ports on a switch
are the same, the port with the highest priority
(i.e., lowest value) will be configured as an active
link in the spanning tree. Where more than one
port is assigned the highest priority, the port with
lowest numeric identifier will be enabled.
The range is 0 - 255.
(Path) Cost 100/19/4 This parameter is used by the STA algorithm to
determine the best path between devices.
Therefore, lower values should be assigned to
ports attached to faster media, and higher values
assigned to ports with slower media.
The default and recommended range is:
Standard Ethernet: 100 (50-600)
Fast Ethernet:
19 (10-60)
Gigabit Ethernet: 4 (3-10)
The full range is 1 - 65535.
Note: Path cost takes precedence over port
priority.